A sum of money triples itself at 10% per annum at simple interest. Find the number of years

A school auditorium is 45 m long and 27 m wide. This auditorium is surrounded by a varandha of width 3 m on its outside. Find the area of the varandha

If the diagonal of a square is 10 cm, then the side of the square is

A car covers 150 km in 3 hours. The distance covered by the car in 12 minutes is

If 12 men can do a work in 15 days then how many days 20 men can complete the same work

 A man had Rs. 75 lakhs with him. He spent 48 lakhs and 85 thousands to buy a building. How much money is left with him